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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_000_010_731">&nbsp;</a>NAME</h4><blockquote>
wcwidth - number of column positions of a wide-character code
</blockquote><h4><a name = "tag_000_010_732">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="wchar.h.html">wchar.h</a>&gt;

int wcwidth(wchar_t <i>wc</i>);
</code>
</pre>
</blockquote><h4><a name = "tag_000_010_733">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>wcwidth()</i>
function determines the number of column positions required for the
wide character
<i>wc</i>.
The value of
<i>wc</i>
must be a character representable as a
<b>wchar_t</b>,
and must be a wide-character code corresponding to a valid character in the
current locale.
</blockquote><h4><a name = "tag_000_010_734">&nbsp;</a>RETURN VALUE</h4><blockquote>
The
<i>wcwidth()</i>
function either returns 0 (if
<i>wc</i>
is a null wide-character code), or returns the number of
column positions to be occupied by the wide-character code
<i>wc</i>,
or returns -1 (if
<i>wc</i>
does not correspond to a printing wide-character code).
</blockquote><h4><a name = "tag_000_010_735">&nbsp;</a>ERRORS</h4><blockquote>
No errors are defined.
</blockquote><h4><a name = "tag_000_010_736">&nbsp;</a>EXAMPLES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_010_737">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
This function was removed from the final ISO C Amendment 1,
and the return value for a non-printable wide character
is not specified.
</blockquote><h4><a name = "tag_000_010_738">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_010_739">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="wcswidth.html">wcswidth()</a></i>,
<i><a href="wchar.h.html">&lt;wchar.h&gt;</a></i>.
</blockquote><h4>DERIVATION</h4><blockquote>
Derived from MSE working draft.
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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